WO2023058119A1 - ソール及び靴 - Google Patents

ソール及び靴 Download PDF

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Publication number
WO2023058119A1
WO2023058119A1 PCT/JP2021/036848 JP2021036848W WO2023058119A1 WO 2023058119 A1 WO2023058119 A1 WO 2023058119A1 JP 2021036848 W JP2021036848 W JP 2021036848W WO 2023058119 A1 WO2023058119 A1 WO 2023058119A1
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WO
WIPO (PCT)
Prior art keywords
region
sole
shoe
elasticity
cushioning
Prior art date
Application number
PCT/JP2021/036848
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English (en)
French (fr)
Japanese (ja)
Inventor
博之 塚田
大希 三宅
Original Assignee
株式会社アシックス
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社アシックス filed Critical 株式会社アシックス
Priority to PCT/JP2021/036848 priority Critical patent/WO2023058119A1/ja
Priority to JP2023552443A priority patent/JPWO2023058119A1/ja
Priority to CN202180102936.3A priority patent/CN118119316A/zh
Priority to EP21959861.2A priority patent/EP4388915A1/en
Publication of WO2023058119A1 publication Critical patent/WO2023058119A1/ja

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    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/18—Resilient soles

Definitions

  • This disclosure relates to soles and shoes.
  • shoes are known that have a structure that mitigates the impact applied to the foot when landing.
  • US Patent Application Publication No. 2015/0223560 discloses a midsole having multiple convex elements.
  • the plurality of convex elements have a shape extending from a recessed surface provided on the surface of the midsole to the surface of the midsole.
  • a plurality of convex elements are formed across the midsole.
  • An object of the present disclosure is to provide soles and shoes that can achieve both mitigation of the impact applied to the foot upon landing and reduction of discomfort felt by the wearer.
  • a sole according to one aspect of the present disclosure is a sole that constitutes a part of a shoe, and has a cushioning portion that reduces the impact applied to the foot upon landing, and an elastic modulus higher than that of the cushioning portion. and a support portion for supporting the foot, the support portion having a support surface provided around the buffer portion, the buffer portion being recessed from the support surface. and a plurality of columnar bodies each having a shape extending from the concave surface to the same height position as the support surface, and the buffer portion includes a high-elasticity region adjacent to the support surface and the a low elastic region adjacent to the high elastic region and having a lower elastic modulus than the high elastic region.
  • a shoe according to one aspect of the present disclosure includes the sole and an upper directly or indirectly connected to the sole and located above the sole.
  • FIG. 1 is a schematic perspective view of a shoe of the first embodiment of the present disclosure
  • FIG. 4 is a plan view of the sole
  • FIG. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2
  • FIG. 3 is a cross-sectional view taken along line IV-IV in FIG. 2
  • It is a top view which shows a buffer part and its vicinity.
  • FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 5
  • 4 is an enlarged cross-sectional view of the sole;
  • FIG. It is a top view which shows the modification of a columnar body. It is a top view which shows the modification of a columnar body. It is a perspective view which shows the modification of a columnar body.
  • FIG. 10 is a diagram showing a modified example of the region of the buffer;
  • FIG. 10 is a diagram showing a modified example of the region of the buffer;
  • FIG. 10 is a diagram showing a modified example of the region of the buffer;
  • Fig. 10 is a plan view of the cushioning portion of the sole of the shoe according to the second embodiment of the present disclosure;
  • FIG. 10 is a plan view of the cushioning portion of the sole of the shoe according to the third embodiment of the present disclosure;
  • FIG. 4 is a perspective view of a low-elasticity region of a buffer;
  • FIG. 10 is a diagram showing a modified example of the region of the buffer;
  • FIG. 10 is a diagram showing a modified example of the region of the buffer;
  • FIG. 10 is a diagram showing a modified example of the region of the buffer;
  • Fig. 10 is a plan view of the cushioning portion of the sole of the shoe according to the second embodiment of the present disclosure;
  • FIG. 10 is a plan view of the cushion
  • FIG. 18 is a cross-sectional view along line XIX-XIX in FIG. 17; It is a figure which shows the modification of a low elasticity area
  • FIG. 1 is a perspective view schematically showing a shoe of a first embodiment of the present disclosure
  • FIG. FIG. 2 is a plan view of the sole.
  • FIG. 3 is a cross-sectional view taken along line III-III in FIG.
  • FIG. 4 is a cross-sectional view taken along line IV-IV in FIG.
  • FIG. 2 shows the sole 10 for the left foot, this sole 10 can also be applied to the right foot, and in this case, it is symmetrical with the sole 10 for the left foot.
  • the shoe 1 of the present embodiment is preferably, for example, a running shoe, but can be applied as other sports shoes or walking shoes, regardless of the use of the shoe.
  • the shoe 1 includes a sole 10 and an upper 20, as shown in FIGS.
  • the upper 20 is connected to the sole 10 and together with the sole 10 forms a space for accommodating the foot. As shown in FIG. 3 , the upper 20 has an upper body 22 and an insole 24 .
  • the upper body 22 covers the upper surface of the foot.
  • the midsole 24 is connected to the lower portion of the upper body 22 and constitutes the bottom portion of the upper 20 .
  • Insole 24 is connected to the surface of sole 10 .
  • the sole 10 forms part of the shoe 1. Sole 10 is connected to the lower portion of upper 20 .
  • the sole 10 has an outer sole 100 and a midsole 200. - ⁇
  • the outer sole 100 constitutes a grounding portion.
  • the outer sole 100 is made of rubber or the like.
  • the midsole 200 is provided on the outer sole 100. Upper 20 is arranged on this midsole 200 . That is, midsole 200 is provided between upper 20 and outer sole 100 .
  • the midsole 200 is made of, for example, a resin foam material containing a resin material as a main component and a foaming agent and a cross-linking agent as subcomponents.
  • resin material for example, resin foams such as polyolefin resin, polyurethane resin, nylon resin, and ethylene-vinyl acetate copolymer can be suitably used.
  • the midsole 200 may be formed of a rubber foam material containing a rubber material as a main component and a plasticizer, a foaming agent, a reinforcing agent, and a cross-linking agent as subcomponents. Butadiene rubber, for example, can be suitably used as the rubber material.
  • the midsole 200 is not limited to the materials described above, and may be made of a resin or rubber material that has moderate strength and excellent cushioning properties.
  • the midsole 200 has a forefoot region R1, a rearfoot region R2, and a middle foot region R3.
  • the forefoot region R1 is a region located in the front portion of the shoe 1 in the longitudinal direction.
  • the rear foot region R2 is a region located at the rear portion of the shoe 1 in the longitudinal direction.
  • the midfoot region R3 is a region located between the forefoot region R1 and the rearfoot region R2.
  • the forefoot region R1 is a region located in a range of about 0% to 30% of the total length of the shoe 1 from the front end toward the rear end.
  • the midfoot region R3 is a region located in a range of about 30% to 80% of the total length of the shoe 1 from the front end to the rear end.
  • the rear foot region R2 is a region located in a range of 80% to 100% of the entire length of the shoe 1 from the front end to the rear end.
  • the midsole 200 has a cushioning portion 210 and a support portion 220 .
  • the cushioning part 210 is a part that reduces the impact applied to the heel of the foot when landing.
  • the buffer portion 210 is provided at least in the rear foot region R2.
  • the buffer portion 210 is provided in a region extending from the rear foot region R2 to the rear portion of the middle foot region R3.
  • the cushioning part 210 is preferably formed in a range of 50% or less from the rear end of the shoe 1 along the center line SC (see FIG. 2) of the shoe 1.
  • the center line SC is not limited to the center line of the shoe 1, and may be a line corresponding to a straight line connecting the center of the calcaneus of a standard wearer of the shoe 1 and between the first and second toes.
  • the cushioning portion 210 has a front end portion 210a, a rear end portion 210b, an inner edge portion 210c, and an outer edge portion 210d.
  • the front end portion 210a is a portion located at the front end in the longitudinal direction. As shown in FIG. 2, the front end portion 210a is located outside the center line SC in the width direction.
  • the rear end portion 210b is a portion located at the rear end in the longitudinal direction. As shown in FIG. 2, the rear end 210b is positioned generally on the centerline SC.
  • the inner edge portion 210c connects the front end portion 210a and the rear end portion 210b, and forms an inner edge portion of the cushioning portion 210 in the width direction.
  • the inner edge 210c has a front edge 210c1 and a rear edge 210c2.
  • the front side edge 210c1 constitutes the front part of the inner side edge 210c in the longitudinal direction.
  • the front side edge portion 210c1 has a shape that gradually faces inward in the width direction from the front end portion 210a toward the rear end portion 210b.
  • the front side edge portion 210c1 has a curved shape that protrudes inward in the width direction.
  • the front side edge portion 210c1 may have a curved shape that protrudes outward in the width direction, or may be formed in a straight line.
  • the rear side edge 210c2 constitutes the rear part of the inner side edge 210c in the longitudinal direction.
  • the rear side edge portion 210c2 has a shape that gradually faces outward in the width direction toward the rear end portion 210b.
  • the rear edge portion 210c2 has a curved shape that protrudes inward in the width direction.
  • the rear edge portion 210c2 may have a curved shape that protrudes outward in the width direction, or may be formed in a straight line.
  • the outer edge portion 210d connects the front end portion 210a and the rear end portion 210b, and forms an outer edge portion of the cushioning portion 210 in the width direction.
  • the cushioning portion 210 has a concave surface 212 and a plurality of columns 214 .
  • the concave surface 212 is located at a height recessed from the surface of the portion of the midsole 200 surrounding the cushioning portion 210 (including the support surface 220a described later). As shown in FIG. 6, the concave surface 212 has a base surface 212a and an inclined surface 212b.
  • Base surface 212a is substantially parallel to the surface of columnar body 214 .
  • the inclined surface 212b is inclined with respect to the base surface 212a.
  • the inclined surface 212b is formed in a region A (a hatched region in FIG. 5) including the inner edge 210c.
  • the inclined surface 212b has a shape that gradually approaches the surface of the columnar body 214 from the edge A1 located within the cushioning portion 210 in the region A toward the outer edge A2 of the cushioning portion 210 .
  • the inclined surface 212b has a shape that gradually approaches the surface of the columnar body 214 from the outer side to the inner side in the width direction. have.
  • This inclined surface 212b may be formed flat as shown in FIG. 6, may be formed so as to be curved so as to be convex upward, or may be formed so as to be curved so as to be convex downward. may be formed in A rear end portion of the region A is located inside the center line SC in the width direction.
  • Each columnar body 214 has a shape extending from the concave surface 212 to the same height position as the support surface 220a.
  • the surface of each columnar body 214 is preferably formed in a polygonal shape in a plan view, and in particular, preferably formed in a polygonal shape having pentagons or more.
  • each columnar body 214 is formed in the shape of a hexagonal column. Note that the corners of the columnar body 214 are not corners in the strict sense, and may be rounded or C-cut.
  • the dimension g (see FIG. 5) between a pair of pillars 214 adjacent to each other is equal to or greater than the height dimension h (see FIG. 7) of the pillars 214.
  • the dimension g is smaller than the length of each side of the surface of the columnar body 214 .
  • the largest dimension D (see FIG. 5) of the columnar body 214 in the direction orthogonal to the axial direction of the columnar body 214 is equal to or larger than the height dimension h of the columnar body 214.
  • the height dimension h is preferably set to 0.5 mm or more.
  • the height dimension h is set to 30% or less of the thickness T of the sole 10 (see FIG. 7).
  • the height dimension h means the distance from the concave surface 212 to the surface of the columnar body 214 .
  • the position of the columnar body 214 is from the rear end portion RP (see FIG. 5) of the ground contact surface portion of the outer sole 100 toward the front along the heel center HC. At least part of the columnar body 214 within a circle X (see FIG. 5) centered at a position of 15% to 25% of the dimension L (see FIG. 2) in the direction along the center line SC of the part other than is set to be placed.
  • the diameter of the circle X is 40% of the length between the portions of the edge of the contact patch portion of the outer sole 100 that passes through the center and intersects a straight line orthogonal to the heel center HC.
  • a plurality of columnar bodies 214 are arranged within the circle X. As shown in FIG. This circle X is located behind the front end of the edge A1 in the longitudinal direction.
  • the heel center HC means a straight line connecting the center of the calcaneus of a standard wearer of the shoe 1 and between the third and fourth toes.
  • the support part 220 is a part that has an elastic modulus higher than that of the cushioning part 210 and supports the foot. In this embodiment, the support portion 220 supports the midfoot portion of the foot. The support portion 220 is provided at least in the middle foot region R3.
  • the elastic modulus is substantially synonymous with the compressive elastic modulus in the thickness direction of the sole 10 .
  • the support portion 220 has a support surface 220a.
  • the support surface 220 a is provided in front of the buffer portion 210 .
  • the support surface 220 a constitutes the surface of the portion of the midsole 200 in front of the cushioning portion 210 . That is, the concave surface 212 is positioned at a height recessed from the support surface 220a.
  • the support surface 220a has a shape extending from one end to the other end in the width direction.
  • the support portion 220 has an inner support portion 222 .
  • the inner support portion 222 has a shape extending inward in the width direction from the inner edge portion 210c. More specifically, the inner support portion 222 has a shape extending inward in the width direction from the front edge portion 210c1.
  • the surface of the inner support portion 222 is continuously connected to the support surface 220a.
  • the surface of the portion of the midsole 200 surrounding the cushioning portion 210 that is, the surface including the surface of the support surface 220a and the inner support portion 222 is adhered to the midsole 24 with an adhesive.
  • the cushioning portion 210 is not adhered to the insole 24 .
  • the midsole 200 has a top midsole 201, a bottom midsole 202, and a shock absorbing portion 203.
  • a bottom midsole 202 is provided on the outer sole 100 .
  • Top midsole 201 is connected to the rear surface of bottom midsole 202 .
  • a buffer portion 210 and an inner support portion 222 are formed on the surface of the top midsole 201 .
  • the support portion 220 is formed near the boundary between the top midsole 201 and the bottom midsole 202 in plan view (corresponding to FIG. 2).
  • the impact absorbing portion 203 is a portion that absorbs impact applied mainly to the heel when landing.
  • the shock absorbing portion 203 is made of a material having hardness lower than the hardness of the top midsole 201 and the hardness of the bottom midsole 202 .
  • the shock absorbing portion 203 is made of, for example, a polymer composition foam or non-foam material.
  • the impact absorbing portion 203 is provided around the rear portion of the buffer portion 210 .
  • the shock absorbing portion 203 is provided at a position that does not overlap with the cushioning portion 210 in the thickness direction of the sole 10 .
  • the impact absorbing portion 203 is separated from the buffering portion 210 in plan view.
  • the shock absorbing portion 203 may be provided at a position overlapping the buffer portion 210 in the thickness direction.
  • the cushioning portion 210 provided in the rear foot region R2 reduces the impact applied to the heel when landing, and furthermore, the midfoot portion of the foot (the portion not stepped on) is relieved. Since the supporting portion 220 has a supporting surface 220a having a shape extending from one end to the other end in the width direction of the shoe 1, collapse of the foot arch (inner longitudinal arch and outer longitudinal arch) is prevented. Suppressed.
  • each columnar body 214 may be formed in a cylindrical shape.
  • each columnar body 214 may be formed in the shape of a triangular column.
  • each columnar body 214 may be composed of a cushioning material having a columnar outer shape.
  • the cushioning material includes a first end surface ES1 and a second end surface ES2 that face each other in the axial direction along which the axis AX1 extends, and a plurality of connection surfaces CS that connect the periphery of the first end surface ES1 and the periphery of the second end surface ES2. , as the outer surface.
  • the first end face ES1 has an N-sided shape (N is an integer equal to or greater than 3) when viewed along the axial direction.
  • the second end face ES2 has an M-sided shape (M is an integer equal to or greater than 4 and greater than N) when viewed along the axial direction.
  • (MN) vertices P are provided at intermediate positions in the axial direction of the peripheral surface defined by the plurality of connecting surfaces CS.
  • One first edge line L1 is provided so as to extend from the (MN) vertices P to one of the N vertices of the first end face ES1.
  • Two second edge lines L2 are provided so as to extend from the (MN) vertices P to two vertexes adjacent in the circumferential direction among the M vertices of the second end surface ES2.
  • (2 ⁇ N ⁇ M) third edge lines L3 are provided so as to reach from the remaining vertices of the N vertices of the first end surface ES1 to the remaining vertices of the M vertices of the second end surface ES2. It is
  • edges included in the first edge L1, the second edge L2 and the third edge L3 do not cross each other, and the edges included in the first edge L1, the second edge L2 and the third edge L3 form a plurality of connections.
  • a surface CS is defined.
  • the first end surface ES1 is a flat surface having a pentagonal outer shape when viewed along the axial direction
  • the second end surface ES2 is a hexagonal outer shape when viewed along the axial direction.
  • the number of vertices P is one.
  • the plurality of connection surfaces CS include a total of six curved surfaces, one curved surface having a substantially triangular outline, three curved surfaces having a substantially quadrangular outline, and two curved surfaces having a substantially pentagonal outline. .
  • each columnar body 214 as the cushioning material, a high cushioning function is exhibited.
  • each columnar body 214 may consist of a cushioning structure including a cushioning unit formed by combining a plurality of cushioning materials into a unit.
  • Each of the multiple cushioning materials consists of the cushioning material shown in FIG.
  • the plurality of cushioning materials are arranged adjacent to each other so that the connection surfaces defined by the first ridgeline L1 and the second ridgeline L2 among the plurality of connection surfaces CS possessed by each other are opposed to each other with a gap G therebetween. It is The size of each gap G is substantially constant.
  • the plurality of cushioning materials are two first cushioning materials having a pentagonal first end surface ES1 and a hexagonal second end surface ES2, and a quadrangular first end surface ES1.
  • the second end face ES2 consists of two second cushioning materials having a pentagonal shape, for a total of four cushioning materials.
  • the two first cushioning materials and the two second cushioning materials are alternately arranged so as to surround the axis AX2 of the cushioning unit, and the two first cushioning materials extend along the axial direction.
  • the direction and the direction of the two second cushioning materials along the axial direction are arranged so as to be opposite to each other.
  • the buffer unit has a substantially hexagonal columnar shape as a whole.
  • the cushioning function of the cushioning portion 210 is enhanced. Also, as shown in FIGS. 12 to 15, the forming area of the buffer portion 210 can be changed in various ways.
  • the plurality of pillars 214 of the cushioning portion 210 include three inner pillars 214a arranged along the longitudinal direction on the inner side in the width direction, and three inner pillars 214a arranged along the longitudinal direction on the outer side in the width direction.
  • the surface of each outer columnar body 214b in plan view is triangular.
  • the surface of each central columnar body 214c in plan view is formed in a substantially pentagonal shape.
  • a concave surface 212 is provided between the outer columnar body 214b and the central columnar body 214c.
  • the support surface 220a is provided around the cushioning portion 210, and the cushioning portion 210 has a high-elasticity region 210H and a low-elasticity region 210L.
  • the outer shape of the low-elastic region 210L is indicated by a thick line.
  • the high-elasticity region 210H is adjacent to the support surface 220a.
  • the structure of the highly elastic region 210H is the same as that of the first embodiment. That is, the highly elastic region 210H has a concave surface 212 and a plurality of columnar bodies 214H.
  • the high-elasticity region 210H has a shape surrounding the entire periphery of the low-elasticity region 210L.
  • the low-elasticity region 210L is adjacent to the high-elasticity region 210H and has an elastic modulus lower than that of the high-elasticity region 210H.
  • the hardness of the low elastic region 210L is about HC25 to HC40 in Asker C hardness.
  • the low-elasticity region 210L is formed at a position overlapping the calcaneus of the wearer of the shoe 1 in the thickness direction of the sole 10 .
  • the low-elasticity region 210L includes four columnar bodies 214L.
  • the material constituting the low-elasticity region 210L may be basically any material as long as it is highly elastic. Resin foams such as nylon resins and ethylene-vinyl acetate copolymers may also be used. In this case, as will be described later, the low-elastic region 210L has a hollow structure, or the foaming rate of the material forming the low-elastic region 210L is adjusted so that the elastic modulus is lower than that of the high-elastic region 210H. It becomes possible to When both are made of the same material, they may be formed integrally or may be formed as separate members.
  • the low elastic region 210L is preferably made of a polymer composition.
  • the polymer to be contained in the polymer composition includes, for example, olefinic polymers such as olefinic elastomers and olefinic resins.
  • olefinic polymers include polyethylene (eg, linear low density polyethylene (LLDPE), high density polyethylene (HDPE), etc.), polypropylene, ethylene-propylene copolymer, propylene-1-hexene copolymer, propylene-4 -methyl-1-pentene copolymer, propylene-1-butene copolymer, ethylene-1-hexene copolymer, ethylene-4-methyl-pentene copolymer, ethylene-1-butene copolymer, 1- Butene-1-hexene copolymer, 1-butene-4-methyl-pentene, ethylene-methacrylic acid copolymer, ethylene-methyl methacrylate copolymer, ethylene-ethyl methacrylate copolymer, ethylene-butyl methacrylate Copolymer, ethylene-methyl acrylate copolymer, ethylene-ethyl acrylate copolymer, ethylene-butyl acrylate
  • the polymer may be an amide-based polymer such as an amide-based elastomer or an amide-based resin.
  • amide-based polymers include polyamide 6, polyamide 11, polyamide 12, polyamide 66, polyamide 610 and the like.
  • the polymer may be an ester-based polymer such as an ester-based elastomer or an ester-based resin.
  • ester-based polymers include polyethylene terephthalate and polybutylene terephthalate.
  • the polymer may be, for example, a urethane-based polymer such as a urethane-based elastomer or a urethane-based resin.
  • urethane-based polymers include polyester-based polyurethanes and polyether-based polyurethanes.
  • the polymer may be, for example, a styrene-based polymer such as a styrene-based elastomer or a styrene-based resin.
  • Styrene-based elastomers include styrene-ethylene-butylene copolymer (SEB), styrene-butadiene-styrene copolymer (SBS), and hydrogenated SBS (styrene-ethylene-butylene-styrene copolymer (SEBS)).
  • styrene-isoprene-styrene copolymer SIS
  • hydrogenated SIS styrene-ethylene-propylene-styrene copolymer (SEPS)
  • styrene-isobutylene-styrene copolymer SIBS
  • styrene-butadiene- Styrene-butadiene SBSB
  • styrene-butadiene-styrene-butadiene-styrene-butadiene-styrene SBSBS
  • styrene resins include polystyrene, acrylonitrile styrene resin (AS), acrylonitrile butadiene styrene resin (ABS), and the like.
  • the above polymers include, for example, acrylic polymers such as polymethyl methacrylate, urethane acrylic polymers, polyester acrylic polymers, polyether acrylic polymers, polycarbonate acrylic polymers, epoxy acrylic polymers, conjugated diene polymer acrylic polymers, and Hydrogenated products thereof, urethane-based methacrylic polymers, polyester-based methacrylic polymers, polyether-based methacrylic polymers, polycarbonate-based methacrylic polymers, epoxy-based methacrylic polymers, conjugated diene-based methacrylic polymers and hydrogenated products thereof, polyvinyl chloride-based resins, silicones system elastomer, butadiene rubber (BR), isoprene rubber (IR), chloroprene (CR), natural rubber (NR), styrene butadiene rubber (SBR), acrylonitrile butadiene rubber (NBR), butyl rubber (IIR), etc. .
  • acrylic polymers such as polymethyl methacrylate, urethane
  • each columnar body 214L in the low-elasticity region 210L has a lightening portion 215.
  • the lightening portion 215 is formed of a through hole penetrating through the columnar body 214L in the thickness direction of the sole 10 .
  • the lightening portion 215 may be configured as a recess that is recessed from the surface of the columnar body 214L toward the concave surface 212 .
  • the inner peripheral surface defining the lightening part 215 of the columnar body 214L is inclined so that the lightening part 215 gradually becomes larger as the distance from the concave surface 212 increases.
  • the outer surface of the columnar body 214L is inclined so as to gradually widen as it approaches the concave surface 212 .
  • the inner peripheral surface and the outer surface may be perpendicular to the concave surface 212 .
  • the low-elasticity region 210L has connecting portions 216L that connect adjacent columnar bodies 214L. As shown in FIG. 19, the thickness of the connecting portion 216L is smaller than the thickness of each columnar body 214L.
  • the cushioning portion 210 mitigates the impact applied to the foot upon landing. Furthermore, the cushioning portion 210 has the high-elasticity region 210H adjacent to the support surface 220a and the low-elasticity region 210L adjacent to the high-elasticity region 210H. rate difference becomes smaller. Therefore, discomfort felt by the wearer is reduced.
  • the low-elasticity region 210L may have three columnar bodies 214L.
  • the columnar bodies 214H in the high-elasticity region 210H and the columnar bodies 214L in the low-elasticity region 210L are not limited to hexagonal columns.
  • each of the columnar bodies 214H and 214L may be formed in a triangular prism shape as shown in FIG. 21, or may be formed in a columnar shape (not shown).
  • the surfaces of the columnar bodies 214H and 214L are preferably formed in a polygonal shape in a plan view, as in the first embodiment, and in particular preferably formed in a polygonal shape having a pentagon or more.
  • the formation position of the low-elasticity region 210L is not limited to the rear leg region R2. As shown in FIGS. 22 to 25, it may be formed in the region from the forefoot region R1 to the middle foot region R3. In these modes, the impact applied to the forefoot or midfoot is mitigated.
  • the low-elasticity region 210L is provided in the central portion of the cushioning portion 210 in the foot width direction, and has seven columnar bodies 214L.
  • the low-elasticity region 210L is provided in the central portion of the cushioning portion 210 in the foot width direction, and has four columnar bodies 214L.
  • the low-elasticity region 210L is provided in a region on the outer foot side in the foot width direction of the cushioning portion 210, and has four columnar bodies 214L.
  • the low-elasticity region 210L is provided in a region on the inner foot side in the foot width direction of the cushioning portion 210, and has four columnar bodies 214L.
  • the low-elasticity region 210L does not have to be entirely surrounded by the high-elasticity region 210H. As shown in FIG. 24, a portion of the low modulus region 210L may be directly adjacent to the support surface 220a. In addition, in the examples of FIGS. 22, 23 and 25, the entire periphery of the low-elasticity region 210L is surrounded by the high-elasticity region 210H.
  • the low-elasticity region 210L may be formed at a position overlapping the ball of the big toe of the wearer of the shoe 1.
  • a sole according to one aspect of the present disclosure is a sole that constitutes a part of a shoe, and has a cushioning portion that reduces the impact applied to the foot upon landing, and an elastic modulus higher than that of the cushioning portion. and a support portion for supporting the foot, the support portion having a support surface provided around the buffer portion, the buffer portion being recessed from the support surface. and a plurality of columnar bodies each having a shape extending from the concave surface to the same height position as the support surface, and the buffer portion includes a high-elasticity region adjacent to the support surface and the a low elastic region adjacent to the high elastic region and having a lower elastic modulus than the high elastic region.
  • the cushioning part reduces the impact on the foot when landing. Furthermore, since the cushioning portion has the high-elasticity region adjacent to the support surface and the low-elasticity region adjacent to the high-elasticity region, the difference in elastic modulus between the supporter, the high-elasticity region, and the low-elasticity region is reduced. Therefore, discomfort felt by the wearer is reduced.
  • the columnar body in the low-elasticity region has a lightening portion.
  • the lightening portion may be a through hole penetrating through the columnar body in the thickness direction of the sole.
  • the low-elasticity region is made of a material having a lower hardness than the material forming the high-elasticity region.
  • the high-elasticity region has a shape surrounding the entire periphery of the low-elasticity region.
  • the cushioning portion may be provided in a rear foot region that overlaps the rear foot portion of the wearer of the shoe in the thickness direction of the sole.
  • the impact applied to the rear foot is mitigated.
  • the low-elasticity region is preferably formed at a position overlapping the calcaneus of the wearer of the shoe in the thickness direction of the sole.
  • the cushioning portion extends from a forefoot region that overlaps the forefoot portion of the wearer of the shoe in the thickness direction of the sole to a middle foot region that overlaps the middle foot portion of the wearer of the shoe in the thickness direction of the sole. may be provided.
  • the low-elasticity region is preferably formed at a position overlapping the ball of the big toe of the wearer of the shoe in the thickness direction of the sole.
  • a shoe according to one aspect of this disclosure includes the sole and an upper directly or indirectly connected to the sole and positioned above the sole.
  • the upper may have an insole connected to the surface of the sole.
  • the support surface is adhered to the insole and the cushioning portion is not adhered to the insole.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
PCT/JP2021/036848 2021-10-05 2021-10-05 ソール及び靴 WO2023058119A1 (ja)

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PCT/JP2021/036848 WO2023058119A1 (ja) 2021-10-05 2021-10-05 ソール及び靴
JP2023552443A JPWO2023058119A1 (zh) 2021-10-05 2021-10-05
CN202180102936.3A CN118119316A (zh) 2021-10-05 2021-10-05 鞋底及鞋
EP21959861.2A EP4388915A1 (en) 2021-10-05 2021-10-05 Sole and shoe

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PCT/JP2021/036848 WO2023058119A1 (ja) 2021-10-05 2021-10-05 ソール及び靴

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JP (1) JPWO2023058119A1 (zh)
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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB510426A (en) * 1938-12-10 1939-08-01 Arthur Fisch Improvements in or relating to shoe soles
US5084987A (en) * 1989-02-03 1992-02-04 Puma Aktiengesellschaft Rudolf Dassler Sport Shoe sole for sport shoes
JPH0448805U (zh) * 1990-08-30 1992-04-24
JP3049755U (ja) * 1997-12-15 1998-06-26 財団法人鞋類設計曁技術研究中心 靴用クッション部材
US20040159013A1 (en) * 2002-07-23 2004-08-19 Ganon Michael H. Elastomeric sole for use with converted flatbed sewing machine
US20130104419A1 (en) * 2011-10-27 2013-05-02 Nike, Inc. Dual-Density Insole with a Molded Geometry
US20150223560A1 (en) 2014-02-12 2015-08-13 New Balance Athletic Shoe, Inc. Sole for Footwear, and Systems and Methods for Designing and Manufacturing Same
JP2019063491A (ja) * 2017-09-28 2019-04-25 美津濃株式会社 シューズ用ソール構造およびそれを備えたシューズ
JP2019165937A (ja) * 2018-03-23 2019-10-03 美津濃株式会社 ソール構造およびそれを用いたシューズ
JP2020163083A (ja) * 2019-03-31 2020-10-08 美津濃株式会社 シューズのソール構造体
WO2021210044A1 (ja) * 2020-04-13 2021-10-21 株式会社アシックス ソール及び履物

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB510426A (en) * 1938-12-10 1939-08-01 Arthur Fisch Improvements in or relating to shoe soles
US5084987A (en) * 1989-02-03 1992-02-04 Puma Aktiengesellschaft Rudolf Dassler Sport Shoe sole for sport shoes
JPH0448805U (zh) * 1990-08-30 1992-04-24
JP3049755U (ja) * 1997-12-15 1998-06-26 財団法人鞋類設計曁技術研究中心 靴用クッション部材
US20040159013A1 (en) * 2002-07-23 2004-08-19 Ganon Michael H. Elastomeric sole for use with converted flatbed sewing machine
US20130104419A1 (en) * 2011-10-27 2013-05-02 Nike, Inc. Dual-Density Insole with a Molded Geometry
US20150223560A1 (en) 2014-02-12 2015-08-13 New Balance Athletic Shoe, Inc. Sole for Footwear, and Systems and Methods for Designing and Manufacturing Same
JP2019063491A (ja) * 2017-09-28 2019-04-25 美津濃株式会社 シューズ用ソール構造およびそれを備えたシューズ
JP2019165937A (ja) * 2018-03-23 2019-10-03 美津濃株式会社 ソール構造およびそれを用いたシューズ
JP2020163083A (ja) * 2019-03-31 2020-10-08 美津濃株式会社 シューズのソール構造体
WO2021210044A1 (ja) * 2020-04-13 2021-10-21 株式会社アシックス ソール及び履物

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EP4388915A1 (en) 2024-06-26
CN118119316A (zh) 2024-05-31

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